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Science
Pressure Conversion Table
Values shown for 1 Pascal
About Pressure Conversions
Pressure units span diverse fields: pascals dominate engineering, atmospheres and bars are used in diving and industrial applications, millimeters of mercury (mmHg) are standard in medicine for blood pressure, and pounds per square inch (PSI) are ubiquitous in tire pressure and pneumatic systems. Weather reports use hectopascals (millibars) or inches of mercury depending on the region. Converting between these units accurately is safety-critical in applications like dive planning, where pressure miscalculations can be life-threatening.
| Unit Name | Symbol | Value | Formula |
|---|---|---|---|
| Atmosphere | atm | 0.00000986923 | multiply by 101,325 |
| Bar | bar | 0.00001 | multiply by 100,000 |
| Inch of Mercury | inHg | 0.0002953 | multiply by 3,386.389 |
| Kilopascal | kPa | 0.001 | multiply by 1,000 |
| Megapascal | MPa | 0.000001 | multiply by 1,000,000 |
| Millibar | mbar | 0.01 | multiply by 100 |
| Millimeter of Mercury | mmHg | 0.00750064 | multiply by 133.322 |
| Pascal | Pa | 1 | base unit |
| PSI | psi | 0.000145038 | multiply by 6,894.757 |
| Torr | Torr | 0.00750064 | multiply by 133.322 |